daunting vs forbidding

daunting

adj
  • Discouraging; inspiring fear. 

  • Appearing to be difficult; challenging. 

  • Intimidatingly impressive; awe-inspiring, overwhelming. 

noun
  • The act of defeating, overcoming, or overwhelming. 

  • The act of discouraging or intimidating; discouragement, intimidation. 

forbidding

adj
  • Appearing to be threatening, unfriendly or potentially unpleasant. 

noun
  • The act by which something is forbidden; a prohibition. 

How often have the words daunting and forbidding occurred in a corpus of books? (source: Google Ngram Viewer )